BLE Advertising Power Switching for Reliable Low-Energy Pairing

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Solution Overview

Problem

Existing communication technologies between function executing devices and terminal devices using Bluetooth Low Energy (BLE) schemes face inefficiencies in establishing connections and transferring information efficiently, particularly in reducing radio field intensity to conserve power and improve usability.

Innovation Solution

Implementing a method where a function executing device and terminal device adjust radio field intensity after initial advertising signals, establish connections, and then communicate target information using adjusted field intensities, enabling seamless handover from Bluetooth Low Energy to Wi-Fi connections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If radio field intensity is maintained at high level for advertising signals, then connection establishment reliability is improved, but power consumption increases

Engineering Contradiction:

Improveconnection establishment reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic adjustment of radio field intensity by switching between first and second intensity levels based on connection state. The wireless interface dynamically changes transmission power: using first intensity during advertising phase, then switching to second intensity after connection establishment, optimizing both reliability and power consumption throughout different operational phases

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the radio field intensity parameter from a fixed high level to a variable level that adapts to connection state. By modifying the transmission power parameter based on whether a connection is established, the system achieves reliable connection establishment while reducing power consumption during stable operation

Inventive Principle:

Principle #35Parameter changes

2Use of energy by moving object

If radio field intensity is reduced to conserve power, then power consumption decreases, but connection establishment reliability deteriorates

Engineering Contradiction:

Improvepower consumptionVSAvoidconnection establishment reliability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent applies preliminary action by establishing connections at high radio field intensity during the advertising phase before switching to lower intensity. The system proactively uses first intensity level to ensure reliable connection establishment, then transitions to second intensity level for power-saving operation, preventing reliability issues before they occur

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements periodic action through alternating between high and low radio field intensity levels based on connection state. The system periodically switches from first intensity during advertising to second intensity after connection, creating a rhythmic pattern of high-reliability establishment followed by low-power maintenance

Inventive Principle:

Principle #19Periodic action

3Ease of operation

If advertising signals are sent continuously at high intensity, then device discoverability is improved, but battery life decreases

Engineering Contradiction:

Improvedevice discoverabilityVSAvoidbattery life

Core Design Contradiction:

Ease of operationVSDuration of action of moving object

Solution Approach 1:

The patent makes advertising signal intensity dynamic by using first intensity level during advertising phase to maximize discoverability, then switching to second intensity level after connection establishment to extend battery life. This dynamic adjustment allows the device to be easily discoverable when needed while conserving battery during stable operation

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20260019509A1Function executing device and terminal device for executing wireless communication according to bluetooth low energy

Publication Date: 2026.01.15 BROTHER KOGYO KK

AI summary

A function executing device may comprise a first wireless interface according to a Bluetooth Low Energy scheme being capable of repeatedly sending an advertising signal. The function executing device may after a first advertising signal in which a first radio field intensity is used has been sent from the first wireless interface, receive a specific signal via the first wireless interface from a terminal device, change a radio field intensity used for sending the advertising signal from the first radio field intensity to a second radio field intensity lower than the first radio field intensity, and after a second advertising signal in which the second radio field intensity is used has been sent from the first wireless interface, establish a first wireless connection with the terminal device via the first wireless interface.